ECE 301
Fall Semester, 2006
HW Set #2
Name ______________________
Print(last, first)
Due: Sept 14, 2006
wlg
circle:
2:10 section
3:40 section
Use Engineering Paper. Work only on one side of the paper. Use this sheet as your cover sheet, placed
on top of your work and stapled in the top left-hand corner. Number the problems at the top of the page,
in the center of the sheet. Do neat work. Underline your answers. Show how you got your
equations. Be sure to show how you got your answers. Each problem counts 10 points.
(1) Work problem 3.2 in the text: Ans: V1 = 5.41 V, V2 = 3.24 V: use nodal analysis
(2) Work problem 3.9 in the text: Find V1, V2, V3, and i: Ans: V1 = -45.53 V, V2 = -48.69 V
Use nodal analysis.
V3 = 1.31 V, i = 0.497 A
(3) Work problem 3.11 in the text: Find V1, V2 and i: Ans: V1 = 1.125 V, V2 = 0.75 V, i = 3.75 A
Use nodal analysis.
(4) Work problem 3.17 from the text: Ans: I1 = 0.333 A, I2 = -1.22 A, I3 = 0.778 A:
Use mesh analysis.
(5) Work problem 3.22 in the text. Work the problem by (a) nodal analysis, (b) mesh analysis.
Ans: VR3 = 84.59 V
(6) You are given the circuit in the following diagram. Use nodal analysis to find Vx and I.
Treat the 3 V source as as a super node. Ans: Vx = -0.2 V, I = 0.467 A..
3V
4Ω
_ +
I
+
7V
+
_
Vx
_
3Ω
2Ω
6Ω
(7) You are given the circuit in the following diagram. Use nodal analysis to find Vo. Ans: 19.64 V
1Ω
4Ω
2 Vo
+
30 V
+
_
2Ω
Vo
_
16 Ω
3A
(8) You are given the circuit in the following diagram. Apply mesh analysis to find I1, I2, I3 and I.
Ans: I = 1.186 A: Other currents on your own.
10 Ω
I1
6V
2Ω
+ _
I
4Ω
1Ω
I2
5Ω
I3
+
_
8V
(9) You are given the circuit in the following diagram. Use mesh analysis to find the current Io.
Ans: Io = - 1.733 A
6V
+ _
2Ω
4Ω
Io
+
_
1Ω
12 V
5Ω
3A
(10) You are given the circuit in the following diagram. Use mesh analysis to find the current Io.
Ans: Io = 1.731 A
Io
4Ω
2Ω
10 Ω
8Ω
60 V
+
_
3Io